167700121 has 4 divisors (see below), whose sum is σ = 177564852. Its totient is φ = 157835392.

The previous prime is 167700077. The next prime is 167700131. The reversal of 167700121 is 121007761.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 66194496 + 101505625 = 8136^2 + 10075^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-167700121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (167700131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4932340 + ... + 4932373.

It is an arithmetic number, because the mean of its divisors is an integer number (44391213).

Almost surely, 2^167700121 is an apocalyptic number.

It is an amenable number.

167700121 is a deficient number, since it is larger than the sum of its proper divisors (9864731).

167700121 is an equidigital number, since it uses as much as digits as its factorization.

167700121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9864730.

The product of its (nonzero) digits is 588, while the sum is 25.

The square root of 167700121 is about 12949.9081463924. The cubic root of 167700121 is about 551.4563288558.

Adding to 167700121 its reverse (121007761), we get a palindrome (288707882).

The spelling of 167700121 in words is "one hundred sixty-seven million, seven hundred thousand, one hundred twenty-one".